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VARIABLE TRANSFORMER DC POWER

ABOUT TRANSFORMER CONTROLLED VARIABLE DC POWER SUPPLIES

Variable DC power supplies are AC to DC power supplies with a variable DC output. The output can be varied with a Variable Transformer (also known as variac). The Variable Transformer can be adjusted manually or with a motorized control. The AC input power can be single phase or three phases. With single phase AC input, the DC output ripple is very high (50%).  With three phase AC input, the DC output ripple is low (5%). This would be a key benefit for selecting three phase AC input instead of single phase.

Click the links below for further information.

 

tranf-017

 Motorized Variable Transformer Controlled Power Supply,
P/N 208163V 0 to 120 VDC, 16 Amps

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Motorized Variable Transformer Controlled Power Supply,
P/N 18534PS 0 to 250 VDC, 200 Amps

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Motorized Variable Transformer Controlled Power Supply,
P/N 18557PS 12 to 350 VDC, 500 Amps

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Motorized Variable Transformer Controlled Power Supply,
P/N 18534PS1 0 to 250 VDC, 200 Amp

tranf-042

Non-Motorized Variable Transformer Controlled Power Supply,
P/N 18407PS 0 To 750 VDC, 0.5 Amps

tranf-022

Non-Motorized Variable Transformer Controlled Power Supply,
P/N 18194PS 0 To 6 VDC, 300 Amps

tranf-015

Non-Motorized Variable Transformer Controlled Power Supply,
P/N 18318PS 0 To 15 VDC, 200 Amps

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Non-Motorized Variable Transformer Controlled Power Supply,
P/N 18422PS 0 to 32 VDC, 600 Amps

 

The Variable Transformer Controlled units are more expensive but ripple on the output remains unchanged at 5% levels as output is lowered from the maximum.

Most variable DC power supplies are custom built. Units can be open frame or enclosed inside an enclosure. Input/output protections can be provided per customer requirements. Output voltage and current meters are provided per customer requirements. The units can be PLC controlled or Manual Potentiometer Controlled.

All major components like transformers and rectifiers are manufactured in-house by CEHCO to achieve the highest quality standard and to ensure the best use of raw materials. This allows us the capability of custom designing units to suit customer specific requirements and meet quick delivery schedules. Our power supply engineers are available to answer all your questions. Please contact us toll free at (800) 595-7096, or send us an email at info@cehco.com.

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